
This part being universal, it may require adaptations
Small but crucial, the KEIHIN 42 idle jet brings order to the low revs of your carburetor. Designed to finely control the flow of fuel at idle and during micro-accelerations, this jet is aimed at riders who value a stable idle and a smooth response at low torque.
A replacement part for carburetors, this jet allows for the adjustment of the air-fuel mixture at idle. Its role is essential during final adjustments: cold starting, stability at idle, and immediate response when coming off the stand or in urban traffic. Ideal for basic tuning or maintenance operations, it installs in the secondary feed of the idle circuit.
Before installation, check compatibility with your carburetor model and retain the original screws. If you are unsure about the adjustment, entrust the intervention to a workshop or a carburetion specialist to avoid over- or under-fueling. With the KEIHIN 42 jet, you regain precise control of low revs, essential for a motorcycle that holds its idle well and responds cleanly from the first twist of the throttle.